"It's just logic, you know, what goes up must come down," drummer Patrick Carney told Radio.com over the phone hours before his band hit the stage at this past weekend's Hangout Fest in Alabama. "I think after the success of [2010's] Brothers, the odds were that the next one would not do that good. And [El Camino] did better. But the odds are for sure that this won't do as well. I think we both hope it does, but we just don't expect it to."

With Turn Blue, the band ditched some of their Midwestern garage-blues roots for something a bit more psychedelic. Turn Blue is more of a headphone record than one you blast out of your El Camino driving down dirt roads.

The Black Keys will soon head over to Europe for string of summer festivals before they head back to the States in September for a 42-date trek. The latter will feature openers like Cage the Elephant, Jake Bugg and St. Vincent, whom Carney personally picked to join them this time around.

For their upcoming tour, in addition to tracks off Turn Blue, Carney and his partner Dan Auerbach also plan to delve deep into their back catalog, a treat for longtime fans. Just don't expect them to take any last-minute requests.

"We have almost 100 songs that we've released, and on any given night we play 19 or 20," Carney explained. "I don't think Dan and I have the brain capacity at any given time to know more than 30 or 40 of our songs. But we'll give it our best shot."